code: def forward(self, x):
      return x[:, self.start_index :]
  
imports: import math
  import paddle
  import paddle.nn
  import paddle.nn.functional
  from paddleclas.ppcls.arch.backbone.model_zoo.vision_transformer import VisionTransformer
label_desc: Use image node_id 2 for calling the Slice obj's underlying member method code with example usage: obj.forward(x) and returns: x